Issues with Metadata Exceptions????

I am trying to run my test app which has a "RunMVC" project and a "Model" project(name and namespace = "TBG3.Model"). The latter is an EF model created via the "Model First" approach thus I have an EDMX file. It is
names TBG3.

I have built all the projects and solution without issue. When I run the Solution I get a Metadata Exception. I believe the issue lies with(in web config):

I am trying to run my test app which has a "RunMVC" project and a "Model" project(name and namespace = "TBG3.Model"). The latter is an EF model created via the "Model First" approach thus I have an EDMX file. It is
names TBG3.

I have built all the projects and solution without issue. When I run the Solution I get a Metadata Exception. I believe the issue lies with(in web config):

Did you create the .edmx file as TBG3 in the first place, or did you create it as the default (Model.edmx) and then rename the file at some point? I seem to recall that I have had issues in the past doing the latter - something in either
the .edmx file content or the connection string gets out of synch. Sorry I can't be clearer. N.B. This is an Entity Framework issue, though, not a Naked Objects issue.